Showing 10 of 16493 Articles:
Hawaii: Iridium Enrichment in Airborne Particles from Kilauea Volcano: January 1983.
Abstract: Airborne particulate matter from the January 1983 eruption of Kilauea volcano was inadvertently collected on air filters at Mauna Loa Observatory at a sampling station used to observe particles in global circulation. Analyses of affected samples revealed unusually large concentrations of selenium, arsenic, indium, gold, and sulfur, as expected for volcanic emissions. Strikingly large […]Volcanoes
Arsenic and fluoride removal from groundwater by reverse osmosis.
Abstract The reverse osmosis process was evaluated for removal of naturally occurring arsenic and fluoride from groundwater. Arsenic removal was affected by the prevalent arsenic species present in the water. Arsenic concentrations were reduced by approximately 60%–90% from nearly 80 ?g/L. Fluoride concentrations were reduced by approximately 60% from nearly 1.7 mg/L. *Original abstract online […]International Water Treatment
Aluminum Firm Gets Qualified Approval To Dump Wastes in Latest Dispute With Frederick Residents
FREDERICK, Md., May 23, 1983 – Pascal Renn, a 71-year-old dairy farmer, sold 500 prime agricultural acres 15 years ago to an aluminum smelting firm, thinking it would be a boon to his native county. Now, he says, he prays “every night I can do something to protect the community from this selfish company.” Renn’s […]United States, Maryland Aluminum Industry
Perils of developing too fast: Brazil’s case study of pollution
Cubatao, Brazil – A visitor’s first impression of this town 20 miles southeast of Sao Paulo is smoke. It hovers in soup-thick clouds – of fluoride gas, sulfur dioxide, ammonia, and carbon monoxide – that often blot out the sun for days. The next thing the visitor notices is the stench, a suffocating smell of […]Brazil Cubatao, Brazil Phosphate Industry
Cities facing a shortage of fluoride additive
LAKELAND, Fla., Aug. 11— A growing number of cities are facing severe shortages of fluoride additives used in water supplies to prevent tooth decay. Twelve cities in the West and Middle West, including Seattle, Youngstown, Ohio, and Green Bay, Wis., have been forced to halt their fluoridation programs, according to Arthur Jackson, a public health […]United States, Florida Phosphate Industry
Two Down and 22 to Go
Industries that discharge wastes into rivers, lakes and streams are required by law to clean up their acts by 1984. The Environmental Protection Agency recently issued regulations for the iron and steel industry, one of the 24 for which EPA must draw up standards. The new rules–designed to remove pollutants such as ammonia, fluoride, solids, […]Steel Industry
Dog Ailments May be Tied to Pet Foods
A series of mysterious dog ailments at Allegan kennels may be the fault of pet foods containing high levels of fluoride, the state’s Toxic Substance Control Commission said today. The state agency called on pet food manufacturers to voluntarily begin taking steps to prevent high levels of fluoride from being introduced to dog and cat […]Miscellaneous
Determination of fluoride in cement and related materials
Abstract This paper describes the determination of fluoride in cement and cement-related materials using a fluoride ion selective electrode. Different sample preparation methods and complexing buffers were investigated. It was concluded that the fluoride electrode offers a rapid and accurate method for fluoride determination in cement and cement-related materials when a suitable buffer medium capable […]Germany Cement Kilns
Skawina Aluminum Factory to be Closed Because of Pollution
As it has no filters at all, the enterprise, situated near Cracow, ”emits into the environment more than 1,700 t of pure fluorine, of which more than 800t finds its way into the environment in the most dangerous form, hydrogen fluoride”. This is the reason for the particularly high incidence of inflammation of the respiratory […]Aluminum Industry
[Amount of fluoride in the teeth of the inhabitants of the high plateaus of Madagascar].
Article in French; no abstract. *Online at https://www.ncbi.nlm.nih.gov/pubmed/7342897Madagascar